Agilent Technologies 6850 GCs Manuale di istruzioni

Installing an Auxiliary Pressure

Agilent 6850 GCs

Accessory G3349B

Control Module

This kit contains:

The module is factory-assembled. Do not disassemble it during installation.

Description Quantity

Cable tie .062-.625 diameter 2

Hex nut w/lockwasher 1

Disposable wrist strap 1

Minifold label 1

Restrictor kit 1

• FID air restrictor (brown) 3

• Blue dot restrictor 3

• O-rings (6 pk) 1

• Tube zero restrictor 3

• External H2flow limiter 2

• External Flow Restrictor Install Guide 1

Aux. press. control module assembly (with covers) 1

Back panel replacement for the GC 1

6850 GC user information CD 1

ChemStation software CD 1

Installation sheet (this document) 1

Installing an Auxiliary Pressure Control Module

Parts identification

Aux. pressure

assembly

Minifold label

Hex nut

w/lockwasher

control module

Installing an Auxiliary Pressure Control Module

Required tools

•Torx®T-20 screwdriver

• Needle-nose pliers

Overview

Caution Before starting, review the safety information listed at the end of this

document.

1. Disconnect the GC.

2. Install the new module.

3. Restore the GC to operating condition.

Installing an Auxiliary Pressure Control Module

Disconnect the GC

WARNING Hydrogen gas is flammable and potentially explosive. Before replacing the

module, turn off the hydrogen gas at the source.

1. Turn off the GC and unplug the power cord. Allow time for all heated

zones to cool.

2. Disconnect all cables from the GC.

3. Turn all gases off at their sources. Disconnect the carrier and detector

gas tubing from the back panel of the instrument.

Disconnect gas supply tubing

from these fittings

Installing an Auxiliary Pressure Control Module

Install the new module

4. Remove the seven T-20 screws on the back panel. Save the screws.

5. Tilt the top of the panel away from the GC.

If you have a Series II GC, save this panel. Otherwise, set this panel

aside because you will no longer use it. A new panel comes with the kit.

Install the new module

Caution Always hold the module by its support bracket to avoid damaging board

components.

1. Change one or more auxiliary channel frits, if needed. See “Changing

the flow restrictors (optional)” on page 8.

Remove

Installing an Auxiliary Pressure Control Module

Install the new module

2. If you will be using the back panel from the kit, use needle-nose pliers to

remove the knockouts for the ribbon cable and power cable slots.

3. Remove the tape from around the new control module and thread the

ribbon cable through the slot in the back panel.

4. Attach the ribbon cable to the pneumatics control board (at P9).

High voltage power

Low voltage power

Ribbon cable slot

Ribbon cable connector

Installing an Auxiliary Pressure Control Module

Install the new module

5. Gather the excess gas tubing from the gang fitting block in a loop and tie

it together with a cable tie.

6. Attach the control module to the back panel by hooking the tabs on the

module just inside the ribbon cable slot. Position it so you can insert the

threaded stud through the hole in the panel. On the inside, use the hex

nut with lockwasher to hold the stud in place.

7. Install the back panel.

Gas tubing

Cable tie

Control module

Nut holding stud in place

Installing an Auxiliary Pressure Control Module

Install the new module

Changing the flow restrictors (optional)

The auxiliary channels are controlled by a pressure setpoint. To work

properly, there must be adequate flow resistance downstream of the

pressure sensor. The auxiliary channel pneumatics manifold provides a frit-

type restrictor for each channel.

Four frits are available:

The red dot frit is in all three channels when the instrument is shipped.

Figure 1 and Figure 2 show approximate pressure/flow relationships for the

three dot frits, assuming there is no significant resistance downstream of the

frits.

If the Zero resistance frit is installed, the user must provide flow resistance

downstream and generate the pressure/flow relationships.

WARNING When hydrogen is used, dangerously high flows are possible if insufficient

flow resistance is provided downstream of the supply tube. Always use

either the High (blue dot) or Medium (red dot) frit with hydrogen. You may

also want to use the restrictor kit that comes with this accessory. Its

installation document describes using it for the 6890 GC, but still applies to

the 6850 GC.

Frit marking Flow resistance Agilent part number

Blue Dot High 19234-60660

Red Dot Medium 19231-60770

Brown Dot Low 19231-60610

None (brass tube) Zero G1570-20540

Installing an Auxiliary Pressure Control Module

Install the new module

Figure 1. Pressure requirements for AUX EPC flow restrictors

with air, nitrogen, or helium

19234-60660

(blue dot)

19231-60770

(red dot)

19231-60610

(brown dot)

Minimum

source

pressure

(psig)

0.1 100.0 1000.01.0 10.0

Gas Flow in mL/min

(Ambient conditions: 25°C, 14.7 psia)

Installing an Auxiliary Pressure Control Module

Install the new module

Figure 2. Pressure requirements for AUX EPC flow restrictors

with hydrogen

19234-60660

(blue dot)

19231-60770

(red dot)

19231-60610

(brown dot)

0.1 100.0 1000.01.0 10.0

(Ambient conditions: 25°C, 14.7 psia)

Gas Flow in mL/min

Minimum

source

pressure

(psig)

Indice

Altri manuali Agilent Technologies Controllori

Agilent Technologies

Agilent Technologies 929-0022 Manuale utente

Agilent Technologies

Agilent Technologies 4UHV Manuale utente

Agilent Technologies

Agilent Technologies Turbo-V 550 Manuale utente

Agilent Technologies

Agilent Technologies Turbo-V 1000HT Manuale utente

Agilent Technologies

Agilent Technologies TwisTorr Medium-TMP X3501-64016 Manuale utente

Agilent Technologies

Agilent Technologies Multiple Channel Controller 85330A Manuale di servizio

Agilent Technologies

Agilent Technologies Turbo-V 750/850-AG Manuale utente

Agilent Technologies

Agilent Technologies 4UHV Manuale utente

Agilent Technologies

Agilent Technologies TwisTorr 74 FS PCB 24 Manuale utente

Agilent Technologies

Agilent Technologies AIC 5000 Manuale utente

Agilent Technologies

Agilent Technologies 8169A Manuale utente

Agilent Technologies

Agilent Technologies Agilent 35900E Manuale utente

Agilent Technologies

Agilent Technologies TwisTorr 74 FS Manuale utente

Agilent Technologies

Agilent Technologies TwisTorr Medium-TMP Rack Manuale utente

Agilent Technologies

Agilent Technologies X3501-64003 Manuale utente

Agilent Technologies

Agilent Technologies XGS-600 Manuale utente

Agilent Technologies

Agilent Technologies Turbo-V 2300 TwisTorr Manuale utente

Agilent Technologies

Agilent Technologies Eyesys Mini-B/A Manuale utente

Agilent Technologies

Agilent Technologies ETC 60 Manuale utente

Agilent Technologies

Agilent Technologies M9405A Manuale

Agilent Technologies

Agilent Technologies G2743A Manuale di istruzioni

Agilent Technologies

Agilent Technologies TV70 Navigator Series Manuale utente

Agilent Technologies

Agilent Technologies 969-9871 Manuale utente

Agilent Technologies

Agilent Technologies TwisTorr 305 FS Series Manuale utente

Manuali Controllori popolari di altre marche

Digiplex

Digiplex DGP-848 Istruzioni operative

YASKAWA

YASKAWA SGM series Manuale utente

Sinope

Sinope Calypso RM3500ZB Manuale utente

Isimet

Isimet DLA Series Style 2 Manuale di installazione

LSIS

LSIS sv-ip5a Manuale utente

Rockwell Automation

Rockwell Automation 1769-L31 Manuale utente

Airflow

Airflow Uno hab Manuale utente

ABB

ABB ACS580-01 drives Manuale utente

Panasonic

Panasonic GM1 Series Manuale utente

Emerson

Emerson SW93 Manuale utente

AutoAqua

AutoAqua Smart ATO micro SATO-120P Manuale utente

Panasonic

Panasonic FP? Positioning Unit RTEX Manuale utente

Samson

Samson Type 5824 Manuale di servizio

Alpha IP

Alpha IP MIOB 21001 Manuale utente

Siemens

Siemens OpenAir GMA 1 Series Manuale utente

Surecom

Surecom SR-629 Manuale utente

Fishman

Fishman TriplePlay Manuale utente

Regulus

Regulus SRS1 T Manuale utente